Developmental Defects of enamel

what is the prevalence of enamel hypoplasia

4-60%

7-13%

20-39%

10-55%

quantitative defect involving the surface of the enamel and associated with a reduction of the enamel thickness

Enamel microdontia

enamel hypomineralization

enamel Hypodontia

enamel hypoplasia

Enamel hypoplasia can be acquired due to local trauma that takes place during which event?

morphodifferentiation stage of amelogenesis

maturation stage of amelogenesis

secretory phase of amelogenesis

during sex while pregnant (penis hitting baby in the face)

what is the genetic condition that causes enamel hypoplasia

genetic mutation in EDA gene

amelogenesis imperfecta

mutation in Wnt signalling

Ectodermal dysplasia

which in of the following is not NOT a common cause of enamel hypoplasia

trauma of primary predecessors

amelogenisis imperfecta

repaired cleft palate

All of the above

which of the following is not a clinical presentation of enamel hypoplasia

enamel Fluorosis

Tiny ares of enamel loss

groves of enamel loss

partial absence of enamel

what is the limit of flouride ion exposure (mg/day) for infants aged 0-6 months

2.2

1.3

0.9

0.7

enamel Hypomineralization is induced by fluoride exposure during which event ?

amelogenesis

secretory phase of amelogenesis

maturation phase of amelogenesis

morphodifferentiation phase of amelogenesis

how is diffused enamel hypomineralization present clinically in a patient ?

patchy opacities with no clear boundary

clear defined boundary from adjacent enamel

post eruptive enamel breakdown affecting first permanent molar

atypical restoration

how is demarcated enamel hypomineralization present clinically in a patient ?

Demarcated opacities with clearly defined boundaries

Molar incisor Hypomineralization

post eruptive enamel breakdown

atypical restoration

enamel fluorosis

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